diff options
Diffstat (limited to 'drivers/gpio/msm_gpio.c')
| -rw-r--r-- | drivers/gpio/msm_gpio.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpio/msm_gpio.c b/drivers/gpio/msm_gpio.c index 54afd44fbd3..6783fc756f4 100644 --- a/drivers/gpio/msm_gpio.c +++ b/drivers/gpio/msm_gpio.c @@ -151,6 +151,9 @@ static int msm_gpio_direction_output(struct udevice *dev, unsigned int gpio, static int msm_gpio_set_flags(struct udevice *dev, unsigned int gpio, ulong flags) { + if (msm_pinctrl_is_reserved(dev_get_parent(dev), gpio)) + return -EPERM; + if (flags & GPIOD_IS_OUT_ACTIVE) { return msm_gpio_direction_output(dev, gpio, 1); } else if (flags & GPIOD_IS_OUT) { @@ -193,6 +196,9 @@ static int msm_gpio_get_value(struct udevice *dev, unsigned int gpio) { struct msm_gpio_bank *priv = dev_get_priv(dev); + if (msm_pinctrl_is_reserved(dev_get_parent(dev), gpio)) + return -EPERM; + if (qcom_is_special_pin(priv->pin_data, gpio)) return msm_gpio_get_value_special(priv, gpio); @@ -232,6 +238,10 @@ static int msm_gpio_get_function(struct udevice *dev, unsigned int gpio) { struct msm_gpio_bank *priv = dev_get_priv(dev); + if (msm_pinctrl_is_reserved(dev_get_parent(dev), gpio)) + return GPIOF_UNKNOWN; + + /* Always NOP for special pins, assume they're in the correct state */ if (qcom_is_special_pin(priv->pin_data, gpio)) return msm_gpio_get_function_special(priv, gpio); |